Patent GB-343151-A (GB)
Title: Improvements in or relating to methods of and means suitable for use in attaching parts of shoes to shoe bottoms
IPC: A43D25/12
Filed: 1929-11-15
Abstract: 343,151. Boots &c. BRITISH UNITED SHOE MACHINERY CO., Ltd., HAZELTON, G., and CLARKE, T. B., Union Works, Belgrave Road, Leicestershire. Nov. 15, 1929, Nos. 34895/29 and 237/30. [Class 17 (i).] Relates to apparatus for carrying out the method of facing heels described in Specification 328,202, [Class 17 (i), Boots and shoes, Apparatus for making &c.], wherein adhesive which has been applied and allowed to dry is rendered tacky immediately before a breast flap is to be secured to a heel. A column 1 supports a rotary turret on which are, say, twelve last supports 81, Fig. 1, having breast-flap clamping devices of the kind described in Specification 202,574, [Class 17 (i), Boots and shoes, Apparatus for making &c.]. The turret base 6 is driven by a worm-wheel 23, a swash-ring clutch of the kind described in Specification 720‹/07, [Class 80, Mechanism, &c.], being interposed between the worm 21 and a driving pulley 19. A clutch trip lever 25 is biassed by a spring 29 to tend to obstruct the swash-ring lever 31 and declutch. The boss of the worm-wheel has twelve equally spaced depressions co-operating with a roll 47 on a slide 45 linked to a lever 53 provided with an adjustable stop 54 under the end of the lever 25. A treadle rod 33 actuates a pull rod 39 having a head overlying the other end of the lever 25. The arrangement causes the turret to be rotated, for each depression of the treadle, the angle between one head and the next, the treadle being released as the turret starts to rotate, but declutching being prevented by the stop 54 until the turret has made the necessary rotation. The turret base 6 carries six bosses 61 each connected by springs 71 to the table and provided with headed pins 65 engaging slots in the table 7. This resilient connection between the turret base and the table reduces shock on the stopping of the turret. The table 7 is of aluminium. For softening the adhesive, a steam generating apparatus is mounted above the table. A bunsen burner 97, Fig. 2, is positioned below a flash boiler 107 supplied with water by a nozzle 117 at the end of a copper pipe 111 provided with a funnel 115. The water is supplied from a reservoir 129 having a central tube for the escape of gases of combustion. From the boiler a rigid lagged steam pipe 119 leads into a casing 143, Fig. 3. terminating in two branches 171, 173, each having a small steam escape hole at the end. The casing 143 is of aluminium and is provided with a heelsupporting platform 145 having a felt lined adjustable gauge shaped as a wide V. An adjustable bar 169 functions as a breast-flap controller, the bar being carried on a plate 167 mounted on a screw engaging a vertical slot in the casing and provided with a clamping nut on the outside. From the lowest point of the steam pipe a pipe 177 for condensed water dips into a water seal 179. A drain pipe 180 is provided. The front of the casing 143 is of plate glass, to provide an inspection window, the top being shaped to conform to the waist of the shoe. The rear wall is similarly formed, and escape of vapour is further prevented by a shaped rubber apron extending laterally from the top of the front wall. In operation, a shoe is positioned above the casing 143 so that the nozzles deliver to the breast surface and inner side of the flap and the grain side of the latter respectively. A completed work piece is removed from the clamp at the operator's position and the steamed work-piece substituted for it, a new work piece being positioned above the casing 143 immediately the first has been removed. The treadle is then depressed to rotate the turret one-twelfth of a revolution, when the cycle of operations is repeated. If the tab end of the flap is to be laid over the tread end, the work pieces may proceed to a machine of the kind described in Specification 343,142, but provided with steaming means of the kind described above.